Razor-stropping machine.



I. BUGHLER & W. WASSERSTROM. RAZOR STROPPING MACHINE. APPLICATION FILEDJAN. 25, 1910.

955,578, Patented Apr. 19, 1910.

UNITED STATES PATENT OFFICE.

ISIDOR BUGHLER, OF NEW YORK, AND WILLIAM WASSERSTROM, OF BROOKLYN, NEWYORK.

RAZOR-STROPPING MACHINE.

T all whom it may concern:

Be it known that we, ISIDOR BUOHLER, a subject of Hungary, and residentof New York city, in the county and State of New York, and /VILLIAMlVAssnRs'rRoM, a citizen of the United States, and a resident ofBrooklyn, in the county of Kings and State of New York, have jointlyinvented certain new and useful Improvements in Razor- StroppingMachines, of which the following is a specification.

The invention relates to improvements in razor stropping machines of theclass comprising a frame through which a strop is threaded and is to bealternately pulled at its ends, and a blade-holder located between thereaches of the strop and adapted to alternately carry the blade theretoas said reaches are alternately pulled outwardly, the blade moving toone reach. as it is pulled outwardly and to the other reach when it ispulled outwardly, and said invention consists in the novel featureshereinafter described, and particularly pointed out in the claims.

One object of the invention is to provide novel mechanism forautomatically and instantly moving the blade from the strop when thepulling strain is relieved therefrom and to automatically retain thebladeholder in a central initial position ready to receive or release ablade.

The invention will be fully understood from the detailed descriptionhereinafter presented, reference being had to the accompanying drawings,in which:

Figure 1 is an end view of a razor stropping machine constructed inaccordance with and embodying the invention, a portion of the razorstrop being broken away; Fig. 2 is a central vertical longitudinalsection of the same on the dotted line 22 of Fig. 1; Fig. 3 is anenlarged central vertical transverse section of the same on the dottedline 3+3 of Fig. 2; Fig. 4: is an enlarged bottom view, partly brokenaway and partly in section, of the upper pivoted strop-actuated bar,with the means carried thereby for transmitting motion to theblade-holder and also for restoring said holder to its central initialposition; Fig. 5 is a detached view of the springs connected with theactuating bar shown in Fig. 1 for moving the bladeholder from the stropto its central position; Fig. 6 is a side elevation of a modified formSpecification of Letters Patent.

Application filed January 25, 1910.

Patented Apr. 19, 1910.

Serial No. 539,968.

of stropping device employing a strop-actuated bar, a blade-holderoperated therefrom, and special spring means for restoring thebladeholder to its central position; Fig. 7 is a sectional View of aportion of the same on the dotted line 77 of Fig. 6, and Fig. 8 is asectional view of the same on the dotted line 88 of Fig. 6.

In the drawings, referring to Figs. 1 to 5 inclusive, 10 designatessuitable end frames connected at their upper corners by tie-rods 11 andat their lower corner portions by rods 12 having tubular rollersthereon. At suitable points between the rods 12 the lower portions ofthe ends 10 are connected by rods 13, between which and the rods 12 thereaches of the strop 14 pass.

Centrally between the upper portions of the end-frames 10 is pivotallymounted a semirylindrical bar 15 over which the strop lt passes andwhich is actuated to turn in one direction or the other on its pivots ortrunnions 16 by the pressure of the strop against it when the reaches ofsaid strop are alternately pulled, as in the operation of sharpening ablade. At its end portions the bar 15 is formed with vertical flanges 17serving to guide the strop 1 1 and retain it in proper position on thebar 15. The bar 15 is preferably a casting formed integrally with theend flanges 17 and trunnions 16, and said bar is mounted between the endframes 10 so as to be capable of free rocking movement on saidtrunnions.

I11 the center of the lower side of the bar 15 is formed a recess orcavity 18, and extending longitudinally across and below said recess isa plate 19 having a central opening 20 and secured at its upwardly bentends to the bar 15 by means of pins or rivets 21. Upon one pin 21 issecured the springs 22, which, in the present instance, are formed of asingle rod of wire folded at its middle upon itself and at its middleportion being in the form of an eye through which passes the pin 21. Thesprings 22 extend longitudinally of and slightly below the bar 15 andabove the opening 20 in the plate 19. The springs 22 are provided forreturning the bladeholder 23 to or toward its central position shown inFigs. 1 and 2, and especially for moving the blade from a reach of thestrop when the pulling strain on said reach is relieved.

The blade-holder 23 is of sheet metal and may be of any of thewell-known forms affording opposite sides adapted to receive and holdbetween them a blade 24 requiring to be sharpened. The blade-holder 23is, in the present instance, equipped with a. spring 25 for yieldinglypressing the blade 24 into the narrower portion of the holder 23, andone end of the spring 25 is bent downwardly, as at 26, to form a stopfor arresting the blade at a given point when said blade is pushed intothe holder 23 from the open end thereof. The holder 23 is formed orprovided with upwardly extending end ears 27 connected with the rod 28which is pivotally mounted in the end-frames 10 so as to have a. rockingor oscillatory motion. The rod 28 supports the holder 23 and is rigidtherewith so that any movement imparted to the rod will be communicatedto the holder. The rod 28 has at its upper side a finger 29, whichprojects upwardly through the opening 20 in the plate 19 and between thesprings 22 and usually slightly into the cavity 18 formed in the bar 15,as shown in Fig. 3. The finger 29, plate 19 and springs 22 form a looseconnection between the bar 15 and rod 28.

In the employment of the device hereinbefore described, the reaches ofthe strop 14 are alternately pulled, in a manner well known in this art,and as the strop slides under pressure over the bar 15 it turns thelatter in the direction of the pull on the strop, said bar 15 turning inone direction when one reach of the strop is pulled and immediatelyturning in the opposite direction when the other reach of the strop ispulled. In this manner the bar 15 is caused to rock back and forth onits pivots or trunnions 16 and during its movements it imparts, throughthe springs 22 and plate 19, a simultaneous movement to the rod 28 andholder 23. When the bar 15 is turned downwardly and to the right,looking at Fig. 3, it will act through the finger 29 to turn the rod 28and holder 23 upwardly and toward the right, and when the bar 15 isrocked toward the left it will turn the rod 28 and holder 23 toward theleft, whereby the reach of the strop being pulled outwardly through theframe will be drawn against the edge of the razor blade 24 then held inposition for that purpose. One of the main purposes of our invention isto provide for the eflicient movement of the holder 23 and blade 24toward the reach of a strop pulled outwardly and a like movement of theblade from said reach the moment said reach has concluded its movementand the other reach of the strop is to be pulled outwardly, so that theblade may not cut the strop, and this purpose is efficientlyaccomplished by means of the plate 19, springs 22 and finger 29. Thenthe stropping of a razor has ceased the springs 22 acting against thefinger 29 restore the holder 23 to its central position and likewisereturn the bar 15 to its normal position. The tilting of the finger 29places an additional tension on that member of the spring 22 againstwhich it is turned and this added tension results in the spring beingenabled to restore the holder 23 to its normal position when the bar 15is relieved from the direct pressure of the strop 14.

The modified construction shown in Figs. 6, 7 and 8 accomplish the samemovements of the blade-holder hereinbefore explained with reference toFigs. 1 to 5 inclusive. Referring to Figs. 6, 7 and 8, 4O denotes thegeneral frame of the device, 41 the rocking bar over which the strop ispulled and cor responding with the bar 15 of Fig. 2, the blade-holder,and 43 the rod from which the holder 42 is suspended and with which itis rigidly connected so as to have oscillatory motion when the rod 43 isturned angularly on its trunnions or pivots 44. Upon the lower side ofthe bar 41 we provide two spring members 45 held at one end and free tobe flexed at their other ends, and a plate 46 having an opening 47therein and formed with two downwardly bent ends 48, said plate 46 andsprings 45 serving the purposes of the plate 19 and springs 22 of Fig.4. Upon the upper side of the rod 43 is provided a D-shaped finger orbar 49, one end portion of which is between the endmembers 48 of theplate 46 and the other end portion of which is recessed in its oppositesides, as indicated in Fig. 7, and between the springs 45. In theemployment of the construction shown in Figs. (3, 7 and 8 the bar 41 iscaused to rock under the action of the strop in the manner describedwith respect to the bar 15 in Figs. 1 to 4 inclusive, and when turningin one direction will through one of the end-members 48 and one of thesprings 45 impart a reverse rotary movement through the bar 49 to therod 43 and holder 42, and when the bar 41 is turned in the otherdirection it will through the other member 48 and spring 45, acting onthe bar 49, turn the rod 43 and holder 42 to the opposite side of theframe 40. The plate 46 of Fig. 6 as does the plate 19 of Fig. 4, assurea positive movement of the blade-holder, while the springs 45 actcorrespondingly with the springs 22 of Fig. 4 and serve to quickly movethe holder toward its initial central position the moment the pullingstrain is relieved from a reach of the strop with which the blade isengaged, said springs instantly moving the razor blade from such reachso that when the other reach of the strop is pulled the blade may notcut the strop.

.Considerable difliculty has been experienced in razor stropping devicesof the class referred to in the blade cut-ting the strop, and thepurpose of our invention is to provide simple and adequate means forassuring the movement of the blade from the strop the moment the strainis relieved from the latter. The plates 19, 46, positively move theblade-holder toward the reach of the strop pulled outwardly but themoment the pulling strain on said reach is relieved the wire spring actsquickly to move the blade from its engagement with said reach.

What we claim as our invention and desire to secure by Letters-Patent,is:

l. A stropping machine comprising a pivotally mounted bar, a stropfolded over and adapted when pulled at either end to actuate the same, apivotally mounted bladeholder having an outwardly projecting finger,means connected with said bar for en gaging said finger and through itimparting positive movement to the blade-holder, and horizontallydisposed springs extending along the lower side of said bar andstraddling said finger; substantially as set forth.

2. A stropping machine comprising a pivotally mounted bar, a stropfolded over and adapted when pulled at either end to actuate the same, apivotally mounted bladeholder having an outwardly projecting finger, aplate secured to said bar and having an open part straddling saidfinger, and horizontally disposed springs extending along the lower sideof said bar and straddling said finger; substantially as set forth.

3. A stropping machine comprising a pivotally mounted bar, a stropfolded over and adapted when pulled at either end to actuate the same, apivotally mounted bladeholder having an outwardly projecting finger,means connecting said bar with said blade-holder for oscillating saidholder from said bar, and wire springs extending along said bar andstraddling said finger; substantially as set forth.

4. A stropping machine comprising a pivotally mounted bar, a stropfolded over and adapted when pulled at either end to actuate the same, apivotally mounted bladeholder having an outwardly projecting finger,means connected with said bar for engaging said finger and through itimparting positive movement to the blade-holder, and horizontallydisposed springs extending along the lower side of said bar andstraddling said finger, said springs being formed of a rod of wiredoubled on itself and held at its folded end on a pin connected withsaid bar; substantially as set forth.

5. A stropping machine comprising a pivotally mounted bar, a stropfolded over and adapted when pulled at either end to actuate the same, apivotally mounted bladeholder having an outwardly projecting finger, aplate 19 secured to said bar and having an opening 20 therein receivingsaid finger, and springs 22 extending along said bar and straddling saidfinger; substantially as set forth.

(3. A stropping machine comprising a piv otally mounted bar, a stropfolded over and adapted when pulled at either end to actuate the same, apivotally mounted bladeholder having an outwardly projecting fin ger, aplate 19 having upwardly bent ends secured to said bar and also havingan opening 20 receiving said finger, and springs 22 secured at one endand extending between said bar and plate and straddling said finger;substantially as set forth.

Signed at New York city, in the county and State of New York, this 24thday of January, 1910.

' ISIDOR BUCHLER.

WILLIAM W'ASSERSTROM. lVitnesses ARTHUR MARION,

CI-IAs. C. GILL.

